When a light switch is turned on, the light comes on immediately because O the lightbulb may be old with low resistance. It would take longer if the bulb were new and had high resistance. O the electricity bill is paid. The electric company can make it take longer when the bill is unpaid. O the electrons already in the wire are instantly "pushed" by a voltage difference. O the electrons coming from the power source move through the initially empty wires very fast.

When a light switch is turned on, the light comes on immediately because O the lightbulb may be old with low resistance. It would take longer if the bulb were new and had high resistance. O the electricity bill is paid. The electric company can make it take longer when the bill is unpaid. O the electrons already in the wire are instantly "pushed" by a voltage difference. O the electrons coming from the power source move through the initially empty wires very fast.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

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When a light switch is turned on, the light comes on immediately because
O the lightbulb may be old with low resistance. It would take longer if the bulb were new and had high resistance.
O the electricity bill is paid. The electric company can make it take longer when the bill is unpaid.
O the electrons already in the wire are instantly "pushed" by a voltage difference.
O the electrons coming from the power source move through the initially empty wires very fast.

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